source/core/inttypes.h

   1 #ifndef MSP_CORE_INTTYPES_H_
   2 #define MSP_CORE_INTTYPES_H_
   3
   4 #include <climits>
   5 #include "typelist.h"
   6
   7 namespace Msp {
   8
   9 // Define lists of standard types, both signed and unsigned variants
  10 typedef TypeList<signed char, short, int, long>::Type StandardSignedTypes;
  11 typedef TypeList<unsigned char, unsigned short, unsigned int, unsigned long>::Type StandardUnsignedTypes;
  12
  13 // Then add possible nonstandard types
  14 #if defined(__GNUC__)
  15 #if (__GNUC__>4 || (__GNUC__==4 && __GNUC_MINOR__>=6)) && defined(__LP64__)
  16 #pragma GCC diagnostic push
  17 #pragma GCC diagnostic ignored "-pedantic"
  18 typedef TypeList<StandardSignedTypes, long long, __int128>::Type PlatformSignedTypes;
  19 typedef TypeList<StandardUnsignedTypes, unsigned long long, unsigned __int128>::Type PlatformUnsignedTypes;
  20 #pragma GCC diagnostic pop
  21 #else
  22 typedef TypeList<StandardSignedTypes, long long>::Type PlatformSignedTypes;
  23 typedef TypeList<StandardUnsignedTypes, unsigned long long>::Type PlatformUnsignedTypes;
  24 #endif
  25 #elif defined(_MSC_VER)
  26 typedef TypeList<StandardSignedTypes, __int64>::Type PlatformSignedTypes;
  27 typedef TypeList<StandardUnsignedTypes, unsigned __int64>::Type PlatformUnsignedTypes;
  28 #else
  29 typedef StandardSignedTypes PlatformSignedTypes;
  30 typedef StandardUnsignedTypes PlatformUnsignedTypes;
  31 #endif
  32
  33 /** A helper for choosing an integer type of a specific size.  The size
  34 parameter is in bits.  The resulting types can be obtained from the SignedType
  35 and UnsignedType typedefs. */
  36 template<unsigned size>
  37 struct Int
  38 {
  39         template<typename T>
  40         struct Predicate
  41         {
  42                 enum { value = (sizeof(T)*CHAR_BIT==size) };
  43         };
  44
  45         typedef typename TypeChooser<PlatformSignedTypes, Predicate>::Type SignedType;
  46         typedef typename TypeChooser<PlatformUnsignedTypes, Predicate>::Type UnsignedType;
  47 };
  48
  49 // Finally define convenient shorthands for the actual integer types
  50 typedef Int<8>::SignedType Int8;
  51 typedef Int<8>::UnsignedType UInt8;
  52 typedef Int<16>::SignedType Int16;
  53 typedef Int<16>::UnsignedType UInt16;
  54 typedef Int<32>::SignedType Int32;
  55 typedef Int<32>::UnsignedType UInt32;
  56 typedef Int<64>::SignedType Int64;
  57 typedef Int<64>::UnsignedType UInt64;
  58
  59 } // namespace Msp
  60
  61 #endif